Impeovement in devices poe operating the shuttles in looms



@einen tsts @anni @Hina IMPROVEMENT IN DEVICES FOR OPERATING THE SHUTTLES IN LOOMS.

JOSEPH J. AND EDWARD HARRISON, OF MAN CHESTER, ENGLAND.

Laim Paume Nojsavev, dated November 2o, 1866.

SPECIFICATION.

TOV ALL WHOM IT MAY. CONCERN:

Be it known that we, JOSEPH JOHN HARRISON and EDWARDY HARMSON, of Manchester, Lancaster county, England, have invented certain Improvements in Looms for weaving, and we do hereby declare the following to be a full, clear, and exact description of the same, reference being had to the accompanying drawing and to the letters of reference marked thereon:

. The invention relates to that part of the loom termed the picking motion," and is designed for thel purpose of dispensing with the picker and apparatus in connection therewith, as now employed, and substituting in lieu thereof a novel and improved arrangement of mechanism that shall give a more perfect and'regular pick without the liability of floating the shuttle; and secondly, the invention relates to an improved arrangement of apparatus to be employed for retarding and checking the shuttle on its being received by the shuttle-box. This motion can be applied to looms for weaving of all descriptions. The arrangement and construction of apparatus for picking may be thus described: vTwo apertures formed in the back and front of the shuttlefbox at their entrance nearest to the loom reed are constructed so as to receive and allow frictional bowls or pulleys to protrude through and enter the shuttle-box. These bowls are situated exactly opposite 'each other, and are supported and secured upon vertical spindles provided withrwharves or pulleys which are driven at a high velocity through an arrangement of pulleys in connection with the crank shaft, which thereby gives a rapid revolution to the aforementioned frictional bowls in a direction outwards from the box. The spindles upon which these bowls are secured are supported on movable bearings, which are acted upon by a wedge in such a manner that the said bowls shall, when the wedge is inverted between their bearings, recede or separate `from each other so as to allow the shuttle freely to enter the shuttle-box, when it becomes immediately checked by the improved eccentric check motion hereinafter described. So soon asxthis is evected the wedge is withdrawn from the spindle bearings, causing thereby the frictional bowl to close upon the shuttle, which effects the instantaneous expulsion of such shuttle into the opposite box, when it is received and again expelled in like manner. The shuttle, upon entering the box, is gradually and eifectually checked by the improved eccentric swell before mentioned, the arrangement and construction of which may be thus described: A finger or rod secured to the stop-rod of the loom, and projecting upwards behind the shuttle-box, is provided with an eccentric disk or bowl having a projecting wing or finger. This eccentric works loose upon its aforesaid supporting rod, and is caused by the action of a spring, in connection with the stop-rod, to protrude or enter the shuttle-box, so that when the shuttle, as described, has passed the picking bowls, it is retarded and checked in its progress by the pressure against its side by the eccentric swell, the action of which upon the shuttle'as such shuttle advances towards the head of the box is to give through its eccentricity an increased pressure thereupon, which e'ectually checks and prevents its further movement in that direction; but so soon as the picking bowls are caused to close upon the shuttle so as to reverse its direction, it becomes instantly released from pressure owing to the formation and eccentricity of the swell. The action of the shuttle when entering the box also forces back the swell and its supporting rod, which, with every complete pick, raises a lever on the stop-rod, and prevents it coming into contact with the frog of the loom, which it otherwise would do if the shuttle did not enter the box, the effect of which wouldbe to stop the loom. i I

In order that the invention may be better understood and explained in detail we have hereunto attached a sheet of drawings, similar letters of reference being marked thereupon:

Fig. 1 is a sectional plan view of suicient of a loom to show our improvements.

Fig. 2, a section on the line 1-2, fig. 1.

Fig. 4, a section on the line 4-4, iig. 1; and

Fig. 3, an inverted plan view.

C is the shuttle-box which is secured'to the slay in a manner too well known to those skilled in this class of machinery to need description.

Through openings in the back and front of the shuttle-box protrude the frictional pick bowls c c, the latter being secured upon the vertical spindles ff, which are supported and rest on the movable lever bearings g g. These bowls are driven at a high velocity, through the arrangement of pulleys z', which receive their motion from apulley on the crank shaft. In conjunction with the rapidly revolving motion a second motion is imparted to them by the wedge k through the medium of the lever Z. This wedge is actuated in such a manner by any suitable mechanism that with each alternate pick it is caused to be inserted so as to force asunder the lever bearings g g, thereby at such time causing atv-greater opening or division between the peripheries of the picking bowls, so as to allow the shuttle freely to enter the shuttle-box.. The shuttle, when passing the picking bowls upon its entrance into the box, is eifectually and gradually checked in its progress by the eccentric swell o', the peculiar formation and action of which is more clearly described hereinafter. The picking bowls, immediately the shuttle is brought to a stand, are caused, by the withdrawal of the wedge from the bearings of the spindles upon which they are secured, to press against the sides of the shuttle, the frictional contact of which has the instantaneous effect of expelling' the same across the loom into the opposite box, where it is received and expelled again in like manner, and so on ad Zz'bz'tum.

The eccentric swell o is supported and turns freely on the finger p, which is attached to the stop-rod g of the loom. The spring i, which bears on an arm, IJ, of the stop-rod, causes the swell, when at rest, slightly to protrude through the apertures in thc back .board of the shuttle-box. A lever on the stop-rod actuates the frog so as to stop the loom (when the weft is brokenA or the cop spent) in the usual manner. The action of the improved eccentric swell from the foregoing lettered description maybe thus described: Upon the shuttle entering the box its frictional contact with the swell causes such swell by its eccentric formation to turn andl exert an increasing pressure upon the shuttle until it is finally checked and brought to a stand, but immediately the slightest outward action is brought to bear upon the shuttle, whether by the ordinary picker or our improved picking bowls, the eccentric swell, with its reverse action, instantly releases the shuttle from pressure, thereby reducing the-strength of pick required, and causing a less wear and tear to the shuttles employed. The pressure of the shuttle against the swell or entering box also forces back the finger p, secured to the stop-rod, and so operating the latter and the devices connected therewith as to prevent the motion of the loom from being interrupted, as it would be if the shuttle did not enter the box. l

Having now described the nature of the said invention, together with the method of carrying the sameinto' practical effect, we wish it to be distinctly understood that we claim First, the novel and peculiar arrangement of mechanism described for expelling the shuttle of looms from 'one box into the other, and vzl'ce versa, without the use of the picker as .now employed for the same purpose. -And Secondly, we claim the eccentric swell and the apparatusin connection Atherewith for gradually and effectually checking the shuttle upon its beipig received by the shuttle-box, and also for instantly releasing the saine upon its expulsion, as hereinbefore described, set forth, and fully illustrated in the drawings attached. In testimony whereof we have hereunto signed our names to this specification in the presence of two subscribing witnesses.

JOSEPH JOHN HARRISON, EDWARD HARRISON.

Witnesses: v

JOHN WALSH, 105 Market street,

EDMND BOND, 40 Princess street, Manchester, 

